AQUATIC INSECT ORDER KEY AMPHIPODA Scud DECAPODA ISOPODA Sow Bug ARACHNIDA PLATYHELMINTHES, HIRUDINEA, or OLIGOCHAETA MOLLUSCA or GASTROPODA Water Mite Clam/Mussel or Snail Flat Worm, Leech, or Aquatic Worm Non-Insect Orders and Classes COLEOPTERA Adult Beetles HEMIPTERA True Bugs TRICHOPTERA Other Caddisfly TRICHOPTERA Net-Spinning Caddisfly MEGALOPTERA Dobsonflies/Fishflies MEGALOPTERA Alderflies COLEOPTERA Adult or Larval Beetles EPHEMEROPTERA Mayflies PLECOPTERA Stoneflies ODONATA Damselflies ODONATA Dragonflies DIPTERA True Flies Insect Orders HEMIPTERA True Bugs PLECOPTERA Stoneflies START HERE Does it have a shell? Does it have wings/wing pads? Are there observable tails or hooks at end of body? Does it have lateral filaments? Does it have lateral filaments? Does it have dorsal or lateral abdominal gills? Does it have wing pads or wings? Are they hard or leathery? How many tails are there? Does it have a head/fleshy protrusions? How many segments are there? Does it have a portable case? Does it have branched gills? Are there jointed legs? Does it have piercing or needle-like mouthparts? Does it have tail filaments? NO YES NO YES YES, 10 LEGS YES, 8 LEGS YES, 6 LEGS 0 OR MORE THAN 12 BODY SEGMENTS YES NO NO YES 11-12 BODY SEGMENTS NO 2 TAILS HARD LEATHERY 3 TAILS NO YES NO YES YES NO YES YES YES YES NO WING PADS WINGS NO YES, 2 TAILS NO NO />